Steam turbine governing valve redundancy control system and control method thereof
A redundant control and steam turbine technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of unrealized redundancy, safety, and hidden dangers of steam turbine control, so as to reduce unplanned downtime and improve safety sexual effect
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[0030] Example: A large steam turbine has two high-pressure regulating valves. The steam turbine control system needs to adjust the opening of these two regulating valves to achieve precise control of important controlled variables, namely the speed of the steam turbine, the front pressure of the steam turbine and the power of the steam turbine. The rush to the whole working process from rated speed to grid-connected initial load to automatic load adjustment to shutdown.
[0031] Such as figure 1 As shown, the redundant control system of the steam turbine gate proposed by the present invention mainly includes a gate control cabinet, a hydraulic actuator and a monitoring system.
[0032] The door control cabinet is composed of a cabinet, a redundant power supply, a redundant distributed control unit, a redundant valve positioner module, etc.; the redundant power supply includes two power supply modules V1, V2 and a power supply redundancy switching module, Provide redundant power s...
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